We understand your desire to reconcile with your ex, but we want to ensure that your relationship aligns with biblical principles. First, let's address the issue of prayer. You did not mention praying in the name of Jesus Christ. It is only by His name that we have access to God.
You mentioned that you were together for 14-15 years, but you did not mention that you were married. You today refer to your ex as the love of your life and your other half, but this terminology is not biblical. The Bible teaches that a man and a woman become one flesh. The Bible teaches that a man leaves his father and mother and cleaves to his wife, becoming one flesh. The Bible teaches that a man loves his wife as Christ loved the church. Marriage is a lifelong commitment between a man and a woman, not simply a relationship between two people who love each other and is certainly not a reference to a partner or an ex boyfriend or girlfriend.
Moreover, the Bible teaches us to flee from sexual immorality and that we should not engage in sexual activity outside of marriage. If you and your ex were not married but were living together or engaging in sexual activity, this is fornication, which is a sin against God. If either of you were married to someone else during this time, this is adultery.
We encourage you to examine your relationship in light of biblical principles. If you and your ex were not married, we encourage you to repent of any sexual immorality and seek God's forgiveness and restoration. We encourage you to pray for God's will to be done in your life and in the life of your ex. We encourage you to seek God's guidance and direction in your relationship and to trust Him to lead you in the path that He has for you.
We pray that God would speak to you both and convict you of any sin in your relationship. If you and your ex are not married, then we pray that God would give you both the strength to resist temptation and to flee from sexual immorality. We pray that God would give you both the wisdom to discern His will for your relationship and the courage to follow His leading. We pray that God would give you both a spirit of forgiveness and reconciliation, but only if it aligns with His will and His principles for marriage and relationships.
If it is God's will for you and your ex to reconcile, we pray that He would restore your relationship and make it a testimony of His grace and mercy. We pray that He would give you both a spirit of humility and repentance, and that He would heal any wounds from the past. We pray that He would give you both a spirit of unity and oneness, and that He would bless your relationship with His love and His joy.
If it is not God's will for you and your ex to reconcile, we pray that He would give you both the strength to accept His will and to move forward in His grace. We pray that He would give you both a spirit of peace and contentment, and that He would lead you both to the path that He has for you.
We encourage you to meditate on the following verses:
Therefore a man will leave his father and his mother, and will join with his wife, and they will be one flesh.
Genesis 2:24 WEB
Marriage is to be held in honor among all, and the bed undefiled: but God will judge the sexually immoral and adulterers.
Hebrews 13:4 WEB
Flee sexual immorality! Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body.
1 Corinthians 6:18 WEB
For this is the will of God: your sanctification, that you abstain from sexual immorality,
1 Thessalonians 4:3 WEB
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
